https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-solving-equations/v/why-we-do-the-same-thing-to-both-sides-simple-equations 2023-06-14T19:01:04.581019455Z Same thing to both sides of equations In this fun math problem, we have a balanced scale with a mystery mass on one side and several 1-kilogram masses on the other. To find the mystery mass, we remove the same number of 1-kilogram masses from both sides, keeping the scale balanced. Then, we can easily determine the mystery mass's weight. Sal Khan video https://cdn.kastatic.org/googleusercontent/mDbW5Kliflbv-kdPwZxHt6-TvT7sOetoTp5u49jMZCRw9jyGA5dZTjuSAJVsBfLD_oEbnP_nBWgEloxxDS0uDGA Same thing to both sides of equations In this fun math problem, we have a balanced scale with a mystery mass on one side and several 1-kilogram masses on the other. To find the mystery mass, we remove the same number of 1-kilogram masses from both sides, keeping the scale balanced. Then, we can easily determine the mystery mass's weight. https://cdn.kastatic.org/ka-youtube-converted/5FBDqY41GjU.mp4/5FBDqY41GjU.mp4 152 Concepto de ecuación https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-solving-equations/v/representing-a-relationship-with-a-simple-equation 2023-06-30T02:13:42.781179102Z Representing a relationship with an equation In this lesson, we learn about balancing scales and solving equations. We discover that to find a mystery mass, we can set up an equation using equal signs and balance both sides. By subtracting the same amount from each side, we can solve for the unknown mass, helping us understand the relationship between the two sides of the scale. Sal Khan video https://cdn.kastatic.org/googleusercontent/IFLGgA9RIMTjYoG_ClYp-VrgjWcI3SX0N8kkzPi3JbXIcHCRIRqmBFrdESNQ0gTG78uDv4v7vqF7F6fgtbRulICk Representing a relationship with an equation In this lesson, we learn about balancing scales and solving equations. We discover that to find a mystery mass, we can set up an equation using equal signs and balance both sides. By subtracting the same amount from each side, we can solve for the unknown mass, helping us understand the relationship between the two sides of the scale. https://cdn.kastatic.org/ka-youtube-converted/XN48Ba9Ncr8.mp4/XN48Ba9Ncr8.mp4 204 Concepto de ecuación https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-solving-equations/e/identify-equations-from-visual-models 2025-09-17T22:00:43.586895114Z Identify equations from visual models (hanger diagrams) Identify the equation represented by a  hanger diagram. Then, solve for the unknown in the equation. Lindsay exercise